Earl,
It wasn't only Turkey having problem with military. Sofia had huge one (that's what we were told, by them, that evening) as well as we (Beograd ACC).
threemiles,
As you, unduobtfully, know, most of the tran/rcv freq. antennas, for the centers, are placed on, at least one, dominant hilltop (we actually have three main sights). One that (that I know of) Sofia uses is at nearby mountain Vitosha, which is facing one of our sights (I would estimate the distance between them 80 - 100 NM). In that way, without any problem, you may listen to that kind of radio transmition.